<template>
  <div class="cartcontrol">
    <div class="cart-decrease " @click="decreaseCart" v-show="food.count>0" transition="move">
      <!-- 字体放内层，动画实现：内层做滚动，外层做移动 -->
      <span class="inner icon-remove_circle_outline"></span>
    </div>
    <div class="cart-count" v-show="food.count>0"></div>
    <div class="cart-add icon-add_circle" @click="addCart"></div>
  </div>
</template>

<script type="text/ecmascript-6">
  import Vue from 'vue';
  export default{
    props: {
      food: {
          type: Object
      }
    },
    created () {
      console.log(this.food);
    },
    method: {
      addCart(event) {
        if (!event._constructed) {
          return;
        }
        if (!this.food.count) {
          Vue.set(this.food, 'count', 1);
        } else {
          this.food.count ++;
        }
        // 添加时注册一个新事件,然后在goods组件中接收该事件
        this.$dispatch('cart.add', event.target);
      },
      decreaseCart(event) {
        if (!event._constructed) {
          return;
        }
        if (this.food.count) {
          this.food.count --;
        }
      }
    }
  };
</script>

<style lang="stylus" rel="stylesheet/stylus">
  .cartcontrol
    font-size: 0
    .cart-decrease
      display: inline-block
      padding: 6px
      transition: all 0.4s linear
      /*动画效果*/
      &.move-transition
        opacit: 1
        transform: translate3d(0,0,0)
        .inner
          display: inline-block
          line-height: 24px
          fontnt-size: 24px
          color: rgb(0,160,220)
          transition: all 0.4s linear
          transform: rotate(0)
      &.move-enter, &.move-leave
        opacity: 0
        /* 3D滚动坐标：X轴，Y轴，Z轴 */
        transform: transLate3(24px, 0, 0)
        .inner
          transform: rotate(180deg)
    .cart-count
      display: inline-block
      width: 12px
      padding-top: 6px
      line-height: 24px
      vertical-align: top
      font-size: 10px
      text-align: center
      color: rgb(147,153,159)
    .cart-add
      color: rgb(0,160,22)
      display: inline-block
      padding: 6px
      line-height: 24px
      font-size: 24px
</style>
